Trade name ‘Basta’ refers to a non-selective herbicide containing the chemical compound phosphinothricin. Basta herbicide tolerant gene PPT (L-phosphinothricin) was isolated from Medicago sativa plant. It inhibits the enzyme glutamine synthase which is involved in ammonia assimilation. The PPT gene was introduced into tobacco and transgenic tobacco produced was resistant to PPT. Similar enzyme was also isolated from Streptomyces hygroscopicus with bar gene encodes for PAT (Phosphinothricin acetyl transferase) and was introduced into crop plants like potato and sugar-beet and transgenic crops have been developed.
Organic Pesticide Pest like aphids, spider and mites can cause serious damage to flowers, fruits, and vegetables. T hese creatures attack the garden in swarms, and drain the life of the crop and often invite disease in the process. Many chemical pesticides prove unsafe for human and the environment. It turns fruits and vegetables unsafe […]
Nuts Nuts are simple dry fruits composed of a hard shell and an edible kernel. They are packed with a good source of healthy fats, fibre, protein, vitamins, minerals and antioxidants. Cashew nut Botanical name : Anacardium occidentale Family: Anacardiaceae Origin and Area of cultivation Cashew has originated in Brazil and made its way to […]
Crossing Over Crossing over is a biological process that produces new combination of genes by interchanging the corresponding segments between non-sister chromatids of homologous pair of chromosomes. The term ‘crossing over’ was coined by Morgan (1912). It takes place during pachytene stage of prophase I of meiosis. Usually crossing over occurs in germinal cells during […]